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The specific immune response

The specific immune response

An antigen is a molecule on a pathogen that the immune system recognises as foreign. Different lymphocytes have receptors with different shapes. Only a lymphocyte whose receptor is complementary to a particular antigen binds that antigen, becomes activated and divides by mitosis to form a clone.

5.3 Immune system and medicines Lesson

  1. GCSE
  2. /Biology
  3. /5.3 Immune system and medicines

Step-by-step lessons on Edexcel GCSE Biology 5.3 Immune system and medicines, covering 5.3.1 The specific immune system, 5.3.2 Response to immunisation, 5.3.3 Advantages and disadvantages of immunisation, 5.3.4 Antibiotics and bacterial infections, 5.3.5 Aseptic techniques in culturing, 5.3.6 Cross-sectional areas of cultures, 5.3.7 Stages of developing new medicines, and 5.3.8 Production of monoclonal antibodies. Each one builds up to exam-style questions. Start with the foundational topics and build up to the higher-tier material.

Lessons